I usually use tri plane concave when doing single concave.
The other day I saw a board with reverse vee concave through most of the board and out the tail (I hope you get what Im trying to describe) it was a board designed for good powerful waves.
Anyone have any experiences with this type on concave? And the positives and negatives of this kind of contour?
I prefer turbo v with inverted venturi bevels and graduated rocker apex.
Don’t forget the radial Bernoulli slot channels, with tucked guide ribs. They make all the difference.
I usually use tri plane concave when doing single concave. - See more at: http://www.swaylocks.com/forums/reverse-vee-concave-advantages#sthash.gvQSPHQW.dpuf 3 does not = 1 
Greg - that link takes us back to this thread.
Sorry for my tongue-in-cheek response, but its difficult to visualize what someone is verbally describing because of any lack of standarization of surfboard terminology. Look at the spiral V thread!
Sometimes Im not very good at finding the right words to describe what im trying to say.
Basically the board that I saw has panel concave, like an inside out panel vee.
I would guess that it would add drive and projection but disadvantages could be lack of smoothness in more choppy conditions??
The terms you use(d) are ambiguous.
But the responses you got did nothing to better Sways.
I generally understand panel V to be V without concaves, as in the first drawing. So panel concave, like an inside out panel V, would be as pictured at the bottom. Seems like a very unusual bottom configuration, do you have any pictures?
BTW, have you seen the Maurice Cole video? More reading here http://www.swaylocks.com/forums/single-concave-designs-maurice-cole
Being an really Olphart,
I’m shaping shortboards with single concave.
I can only watch and listen cuz I can’t ride them!
However, Mr Cole (to my knowledge) started the “reverse vee” and indeed I did jump on board.
Riding one in my avitar.
My feed back was " nice in smooth to offshore".
Chop? I didn’t like changing direction while trying to survive the drop.
Thumbs down on the reverse vee.
And to me the single concaves look as though they handle bumpy conditions well.
My 2cents!
Aloha
Hey Mattwho,
Just wondering for the boards you have made, that you like, with either concave or vee what is your preference on how far to go from a flat bottom, or how far is too far?
I have read about Maurice’s boards and for his design, I know he goes pretty far, but just interested on what you have liked, or anyone else for that matter.
Cheers,
Jason
The reverse vees I have riden where shaped by Glen Kennedy in the mid 90’s and are big wave boards with, jezz maybe 1/4" max and ran out as you are saying.
Just kinda oldschool now in my mind. heres a shot of the last reverse v and a single concave semi gun?
MC’s video
Got me started.
Kinda like what Mr. Barnfield said for me (left right).
Way rad with the 1st concaves.
Then very conservative.
been at this a few years now.
I will tell you this.
Depth depends of wave/rider
Keep your deepest under the feet.
Very important, the entry of concave and entry rocker.
Reseach and develop
Concave on rail (pix)
Aloha
during a 3 week stay at G-Land in 94’, one of the Johnston brothers from the North Shore, think it was Jeff, showed up and in DOH grinders ripped hard backside, riding a 6’6" reverse V concave RP that he apparently had shaped for the trip as an experiment that worked quite well.
A friend was absolutely hauling akole couple days ago in well overhead beachbreak, riding a 6’4 Christenson Dauntless. Gave it the close over on the beach. Entry V ran all the way from nose to tail, with double concave starting just behind center, a 2+1 set-up with approx 3.75" glassed on side fins placed about 14" up from the tail, running a 7" True Ames Bonzer fin about 2" behind the side fins in a long box. Had never seen a bottom config quite like that before, and based on what I saw, it worked real good. Christenson definitely has found his own mojo as a shaper.
HMM…
I surf forward not in reverse
